Plasmonic cellulose textile fiber from waste paper for BPA sensing by SERS

Research output: Contribution to journalArticleScientificpeer-review

Researchers

  • Sijia Liu
  • Rongkai Cui
  • Yibo Ma

  • Qian Yu
  • Akash Kannegulla
  • Bo Wu
  • Hongtao Fan
  • Alan X. Wang
  • Xianming Kong

Research units

  • Liaoning University of Petroleum and Chemical Technology
  • Oregon State University

Abstract

Flexible plasmonic Surface-enhanced Raman scattering (SERS) substrates were fabricated using cellulose textile fibers, in which the textile fibers were recycled from waste paper in an eco-friendly way. The Glycidyltrimethylammonium chloride (GTAC) with positive charges was grafted onto the surface of the cellulose textile fibers through cationization. Plasmonic silver nanoparticles (Ag NPs) with negative charges were decorated onto the cellulose textile fibers via electrostatic interactions. After cationization, the variation range of the diameter of the cellulose textile fibers was significantly increased because part of the cellulose was dissolved under alkaline condition, leading to more ‘hot spots’ for SERS during the shrinking process. The cellulose textile fiber-Ag NPs nanocomposite was employed for monitoring bisphenol A (BPA) in water and soft drink by SERS and the sensitivity of BPA detection achieved 50 ppb. The recovery values of BPA in soda water samples were from 96% to 105%. These results illustrate that the cellulose textile fiber-Ag NPs nanocomposite can be used as flexible, high sensitivity SERS substrates for detecting harmful ingredients in food or environment.

Details

Original languageEnglish
Article number117664
JournalSpectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy
Volume227
Publication statusPublished - 15 Feb 2020
MoE publication typeA1 Journal article-refereed

    Research areas

  • BPA, Cellulose textile fiber, Flexible sensor, Plasmonic NPs, SERS

ID: 38288038